code: def test_request_fake_url_vars():
      request = Request.fake("/")
      assert request.url_vars == {}
      request = Request.fake("/", url_vars={"database": "fixtures"})
      assert request.url_vars == {"database": "fixtures"}
  
file_path: datasette/tests/test_internals_request.py
imports: from datasette.utils.asgi import Request
  import json
  import pytest
label_desc: Use image node_id 2 for calling a global function with example usage: test_request_fake_url_vars() without return types